US1652593A - Withdrawing means for side-slip weft detectors - Google Patents

Description

Dec. 13, 1927. 1,652,593

W. WAKEFIELD WITHDRAWING MEANS FOR SIDE SLIP WEFT DETECTORS Filed 91 59 ?2 ufiwfififi 1 WALTER H. WAKE F] E LD W'FM AT TO RN Eys Dec. 13, 1927. 1,652,593

w. H. WAKEFIELD WITHDRAWING MEANS FOR SIDE SLIP WEFT DETECTORS Filed May 20. 1926 2 eats-Sheet 2 1 g-lm- 3 /////////lm 4 I Z} i 7 y INvE NTOR WALTER H. WAKEFIELD ATTQRNE s Patented Dec. 13, 1927.

UNITED STATES PATENT OFFICE.

WALTER H. WAKEFIELD, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO CROMPTON & KNOWLES LOOM WORKS, OF.WORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

WITHDBAWING MEANS FOR SIDE-SLIP WEFT DETECTORS.

Application filed May 20,

This invention relates to improvementsin means for withdrawing loom weft detectors of the side slipping type and it is the principal object of the invention to aflord simple means readily adjustable for withdrawing the detector on transferring beats of the loom and also to prevent a repetition of the indication of weft exhaustion.

In automatic box looms the weft detector is usually mounted on the magazine side of the loom and where the detector passes through a slot in the shuttle it is necessary that the detector be removed on transferring beats to clear the path of the incoming full bobbin. Looms of the type specified are usually equipped with a regularly reciprocating actuating lever which is normally free to move without interruption but which at-indication of weft exhaustion is held against normal movement by a controller pin and it is a still further object of my invention to withdraw the controller pin to prevent a repeated indication of weft exhaustion when the exhausted shuttle arrives under the magazine for replenishment.

It is a more particular object of my invention to provide a combined controller pin and detector withdrawing device having connected portions which afford relative adjustments to the end that the detector may be moved longitudinally with respect to the shuttle without disturbing the normal position of the controller- It is a still further object of my invention to provide an improved weft detector withdrawing element which is lengthened to afford additional bearing surface to the end that said element may be given extra support when in detector withdrawing position.

The detector of the type to which my invention more particularly relates comprises a bent wire movable angularly in a supporting housing and it is a further object of my invention to provide a withdrawing means for the detector so constructed as to prevent accidental displacement of the withdrawing means and the connected controller, the means employed being equally effective in all adjusted positions of the detector and serving also to prevent the controller pin from eing dislodged from its guide.

With these and other objects in viewwhich 1926. 'Serial N0. 110,552.

willappear as the description proceeds my invention resides in the combination and arrangement of parts hereinafter described and being indicated in dotted lines,

Fig. 2 is a vertical section on line 2+2 of Fig. 1 looking'in the direction of the-arrows,

Fig. 3 is a front elevation of the detector on a reduced scale looking in the direction of arrow 3, Fig. 1,

Fig. 4 is a top plan view of the controller withdrawing element with the associated parts indicated in dot and dashlines, and

Fig. 5 is a vertical section on line 5-5 of Fig. 1. p i

Fig. 6 is a vertical section on line 6-6 of Fig.

Referring particularly to Figs. 1, 2, and 3 it will be seen that I have provided a loomside 10 and breast beam 11 on which is mounted the frame 12 of a weft replenishing mechanism preferably of the multi-color type such as set forth in Patent No. 1,030,748. The frame 12 is provided with a stud 13 on which is pivotally mounted the hub 14 of a transferrer lever 15 the rear bobbin engaging arm 16 of which extends over the shuttle S and bobbin B when the lay is on front center. The transferrer arm has depending legs 17 between which extends a stud 18 by means of which the transferrer is given a downward movement on the transferring pick of the loom by connections not shown.

A stand 19 is bolted to the loom frame and has vertically reciprocably mounted therein a block 20 on which is pivoted an actuator lever 21 the inner end of which is connected to a magazine actuatin rod 22 and the other end of which lies in s 0t 23 formed inthe stand. lVhen there is sufiicient weft present for continued weaving the actuator lever 21 will be free to descend in slot 23, but; when insufficient weft is present a controller pin 24 will be under the outer end of the actuportion thereof and ator lever 21 and as the block descends rod 22 will be given a downward movement to initiate replenishment. The matter thus far described is of common construction and may be as set forth in the aforesaid patent, the only difference being that controller pin 24 is somewhat different from that shown in the aforesaid patent.

In carrying out my invention I provide a bracket to which is bolted a stand 31 having a horizontal slot 32 to receive a bolt 33 which passes through a vertical slot 34 formed in support 35. The upper part of the support is flattened as at 36 to form the lower portion of a detector housing the upper part ofwhich is provided by a cap 37 The support is provided with a boss 38 and is surrounded for the most part by an upstanding flange 39. Said flange is broken away at the rear right portion to define a shoulder 41 and there is projecting lnwardly from the left hand side of the flange a lug 42 which defines a notch 43.

r The detector which I employ is formed of a single piece of wire D bent at the rear having teeth 44 cut therein, the forwardly extending portion of the wire being curved as indicated in 1 and normally lying in contact with shoulder 41. Saidwire is provided with a bentportion 45 and a straight portion extending to the left as indicated at 46. The extreme forward end of the wire is formed as a pivot indicated at 47 so proportioned as to be received in notch 43. The distance between the right hand portion of the bend 45 and the left end of the detector is slightly lessthan the distance between the inside side walls of the flange 39, the purpose of this construction being to prevent undue lateral movement of the detector. The forward portion ofthe wire is provided with a crimp 48 which receives the forward end of a coil spring 49 the rear end of which is received by a projection 50 cast on the support. The normal function of the spring 49 is to hold the pivot portion 47 in the notch 43 and the curved rearwardly extending part of the detector against shoulder 41 thus positioning said detector for proper engagement with the surface to be detected.

In carrying my invention into further effect I provide the controller pin 24 with a laterally extending bent portion indicated at 60, said end being bent back upon itself to define a slot 61 and the rear bent portion being in front of one of the legs 17 so that as the latter moves forwardly the controller will be moved therewith. Said controller as indicated in Fig. 4 is formed ofrelatively heavywire such as will resist the pressure of actuator lever 21.

.The. withdrawing element is formed of a relatively lighterwire IV the forward portion of which isbent back on itself to form a slot 62, one end of the wire being extended as at63 along the adjacent leg 17 to serve as a guide to restrain lateral movement to the left of the controller pin and withdrawing wire should these parts for any reason be given an undue forward movement. The rearwardly extending arm of the wire IV passes through a groove 63 formed in the front part of flange 39 asindicated inFigs. 1 and 3. Said portion of the wire (V is provided with a notch 64 which extends over and behind that portion of the detector D which lies between the pivotal end 47 and the crimp 48. The horizontal portion 36 of the support is provided witha shoulder 65 as shown in Fig. 6 along which the rear portion of the wire D is guided to prevent lateral movement to the left as viewed in Fig. 1. The wire D is extended beyond the notch 64 and is bent upwardly as at 66 to be in engagement with the top of cap 37 near the rear portion thereof. In front of the notch 64 is an oflset 67 which is so positioned that when the detector-is given its maximum, forward position said notch will be in engagement with a portion of the flange 39 to prevent the wire W from passing through the groove 63 The slots 61 and 62 cross each other as indicated in Fig. 4 and have extending therethrough a holding bolt or screw 68 the lower part of which has threaded thereon a nut 69, there being washers 70 in engagement with the wire W and the forward portion of the'controller pin to hold said parts firmly together when the bolt and screw are tightened.

The operation of the device is substantially the same as set forth in co-pending application Ser. No. 111,661 filed by Blanchard, the wire D being moved forwardly when sufficient yarn is present to give a forward movement to withdraw wire W and controlling pin 24, the latter moving from under the actuator lever 21. When insufficient yarn is present,however, the de tector D swings around the notch 43 as a pivot and the wire IV and therefore the controller pin 24 will remain practically at rest so that downward movement of the actuator lever 21 is interrupted and indication of weft exhaustion is given to the magazine by rod 22 as set forth in the aforesaid patent.

On a subsequent beat of the loom when the shuttle which previously gave indication of weft exhaustion is under the magazine the transferrer arm 15 will descend by mechanism not shown but well understood and one of the legs 17 will engage the offset portion 60 of the controller pin, moving the latter forwardly so as to be out of the path of the actuator lever 21 and by means of the bolt 68 serving also to withdraw the detector D from the path of the incoming bobbin. Too great a forward movement of the parts shown in Fig. 4 will be prevented by the offset 67.

It occasionally happens that the stand 35 is moved longitudinally of the shuttle to vary the point at which the teeth 44 will engage the surface to be detected and in order to accommodate this motion the bolt 68 can be loosened and moved along slot 61 in the proper direction until the withdrawing wire W is in proper position relatively to the detector D, after which the nut 69 will be tightened. Should the detector be moved rearwardly or forwardly relatively to the actuator lever 21 a corresponding adjustment can be made by moving the bolt 68 in slot 62.

From the foregoing it will be seen that I have provided a very simple means for withdrawing the detector on transferring beats of the loom and also for preventing a repetition of the indication of weft exhaustion by moving the controller pin 24 from under the actuator lever 21. It will further be seen that by reason of the slots 61 and 62 and the bolt 68 passing therethrough relative lateral and back and forth adjustments of the wire WV may be made with respect to the controller pin. It will further be seen that the offset- 67 in wire V prevents loss or dislocation of the controller pin and withdrawing wire and it will further be noted that the rear extension 66 of the wire beyond the notch 64 affords additional support for the wire V when the latter is in foremost position, this support assisting in holding the controller pin in proper alignment with respect to the actuator lever.

Having thus described my invention, it will be apparent that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention, and I do not wish to be limited to the details herein disclosed but what I claim is:

1. In a weft detector for looms, a support, a side slipping weft detector mounted on the support and having an angular movement on indicating beats of the loom and having a forward sliding movement on non-indicating beats of the loom relatively to the support, an actuator lever, a controller therefor, a withdrawing means operatively connected to the detector and guided by the support, means defining a slot in the 0011- troller member and also the withdrawing means, said slots crossing each other, and means passing through the slots'to secure the member and means together in any one of a plurality of different positions, and means to move the member and means forwardly on transferring beats of the loom to withdraw the detector from the path of the incoming bobbin and to move the controller out of operative relationship with respect to the actuator.

2. In a weft detector for looms, a support, a side slipping weft detector mounted on the support and having an angular movement on indicating beats of the loom and having a forward sliding movement on non-indicating beats of the loom relatively to the support, an actuator, a controller therefor formed of a wire havin one end thereof bent back on itself to define a slot, a withdrawing means for the detector guided by the support and formed ofa wire the forward end of which is bent back on itself to form a slot disposed out of parallelism with respect to the first named slot, means passing through the slots and binding the controller and withdrawing means together, and means acting on one of said wires to move both of them forwardly on transferring beats of the loom.

3. In a weft detector for looms, a support, a side slipping weft detector mounted on the support and having an angular movement on indicating beats of the loom and having a forward sliding movement on nonindicating beats of the loom relatively to the support, an actuator, a controller member therefor normally disposed to interrupt movement of the actuator, a withdrawing member for the detector, means to adjustably connect the controller and withdrawing means together to cause the same to move in unison, and means operative on transferring beats of the loom to engage one of said members to move the detector out of the path of the incoming bobbin and the controller out of the path of the actuator.

4. In a weft detector for looms, a support having a cap, a side slipping weft detector mounted on the support and under the cap and having an angular movement on indicating beats of the loom and having a forward sliding movement on non-indicating beats of the loom relatively to the support, withdrawing means for the detector having operative contact with said detector, means operative on transferring beats of the loom and normally independent of the withdrawing means to give the latter a withdrawing movement to move the detector out of the path of the incoming bobbin, said withdrawing means being guided by the support and having a portion extending upwardly and beyond the detector and in sliding contact with a portion of the cap of the support to afford additional supporting means for the withdrawing means when the latter is given a withdrawing movement.

In testimony whereof I have hereunto affixed my signature.

WALTER H. WAKEFIELD.

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